Feeding device for sulfur-burners



F. B. CHAPPELL.

FEEDING DEVICE ma SULFUR swarms APPLICATION FILED APR-20, I920.

1 5370 627 Patented Man 8, 1921.,

[Wye/270x Freda flap eel, a v I UNITED STATESPATENT OFFICE.

FRED B. CHAPPELL, OF GLENS FALLS, NEW YORK, ASSIGN OR 0F ON E-HALF TO GLENS FALLS MACHINE WORKS, OF GLENS FALLS, NEW YORK.

FEEDING DEVICE FOR SULFUR-BURNERS.

Specification of Letters Patent.

Patented Mar. 8, 1921-,

Application filed April 20, 1920. Serial No. 375,393.

T 0 all whom it may concern:

Be it known that I, FRED CHAPPELL, a citizen of the United States of America, and resident of the city of Glens Falls, in the State of New York and United States of America, have invented certain new and useful Improvements in Feeding Devices for Sulfur-Burners, of which the following is a full, clear, and exact description.

This invention relates to improvements in feeding devices for sulfur burners, and the object of the invention is to provide a feeding device which will not become clogged with sulfur and which will offer little, if any, resistance to the passage of the sulfur, thereby reducing the amount of power formerly necessary for feeding.

The invention resides in the formation of the spout through which the sulfur is fed described to protect the sulfur as much as possible. What really happened was, that the sulfur' acquired enough heat from the spout to become sticky and resist movement through the spout, with the result that a dam of sulfur formed at or near the outlet. The closed top and restricted outlet caused the sulfur in this dam to become packed and the resistance to feeding necessitated the use of considerable power. After the sulfur dam remains a sufiicient time in the mouth of the spout, the lower portion there-' Fig. 2 is a perspective view of the spout alone.

Referring more particularly to the drawings,-11 designates the revolving drum of a sulfur burner having a frusto-conical'end 12 into which the feeding device projects. The feeding device comprises a hollow body 13 carrying a supply hopper 14 and a feed screw 15. A spout 16 is provided at the discharge end of the body 13 and projects a short distance into the burner but not beyond the frusto-conical end 12.. The spout comprises a cylindrical body 17 having at one end a finished portion 18 which fits aecurately within the body 13. Approximately two-thirds of the length of the -pro jecti'ng portion of the spout is cut away above the horizontal diameter, as indicated at 19, so that the discharge end of the spout is an open trough. This spout is considerably shorter than the spouts heretofore used so that it projects only a comparatively short distance into the burner.

escape of sulfur so that the sulfur,which is advanced by the feed screw, does not linger in the spout. The fact that the spout-is open and exposes the sulfur to the heat of the burner is compensated for by the reduced length so'that the sulfurmelts very little, if at all, in the spout. The unrestricted opening allows any masses of partly melted sulfur to escape without blocking the spout. The sulfur is fed through a spout according to this invention in a substantially continuous and uniform manner and with much less power expenditure than heretofore. V

Having thus described my invention, what I claim is 1. A feed spout for sulfur burners open at its discharge end and at the top adjacent the discharge end.

The open .dlscharge end offers no resistance to the 2. A feed spout for sulfur burners adapted to be connected to the feeding device and to project a short distance into the combustion chamber of a burner, said spout being unrestrictedly open at its discharge end and for a portion of its length above the horizontal diameter.

3. A feed spout for sulfur burners comprising a tubular inlet. portion and a trough discharge portion having anlunrestricted discharge end.

l. A spout for sulfur burners adapted to be connected to the feeding device and to project a short distance into the combustion chamber of a burner, said spout comprising atubular inlet portion and a trough shaped discharge portion having an unrestricted discharge end, the arrangement being such that the portion of the spout projecting beyond the feeding device is t-ubular through approximately one third of its length and trough-shaped through approximately two thirds of its length.

In witness whereof, I have hereunto set my hand.

FRED B. CHAPPELL. 

